Such different influenza viruses
For the first time the influenza virus was discovered in 1931. After 2 years, the British physicians described it officially and identified it. Three years later, viruses began to divide into subspecies-for example, influenza with the causative agent of the B virus was identified, and in 1947, scientists isolated the influenza virus by type C. What are the different types of influenza viruses?
The influenza A virus that causes the flu is one of the most common. He excites the flu with moderate and mild severity. This virus is so easily transmitted from person to person and from animal to person, which can infect entire cities with epidemics (especially in ancient times). These epidemics are so great that scientists call them pandemics.
The virus of group B with spread is simpler. For example, it does not cause pandemics, but it can cause local outbreaks in a certain city or village. But there are many such settlements, not in one, but in several countries. Moreover, the influenza A virus and the influenza B virus do not interfere with each other and can manifest in the same human society equally intensively. True, for virus A it is more typical to affect adults, and for virus B - children. But neither children nor adults are immune from the fact that both can travel to their bodies.
There is also the influenza C virus, which is not very well known to scientists, despite all the novelties of modern equipment. This virus is not transmitted to animals or from them to humans. Having infected with this flu virus, a person may not even suspect what a serious illness he has, because he gets rid of a slight discomfort. Symptoms that occur with infection with the influenza C virus may not appear at all or may appear in a very mild form. Virus C can affect a person at the same time as an influenza A